Ossau Iraty AOC can only be made in the French Basque area of Bearn and Iraty.Only cheese made in that area can be legally called Ossau Iraty and receive the AOC or DOP seal.

In the past, different European nations have established their own protection of domain rules. The designation was only given to cheeses that had historical value and needed to be protected from competition of disgenuine cheese and counterfeits. The decree for a given cheese determine the area of production, animal and breed, animal feed, production method, aging period, size of the cheese, moisture and fat contents, etc. Makers of any of the cheeses that have such status are typically banded together in a consortium or co-op and market their cheeses together rather than competing against each other. Originally, each nation had a different name for it. In Italy is was DOP, in Spain it was DDO and France had AOC and AOP. Now the European Union is attempting to include all of the products under a single decree which is PDO and do away with the old system.

Carrefour - is a giant chain of European supermarkets, headquartered in France. They may distribute this cheese from Belgium, but the cheese is still made in the French Basque area.Agour - is a major producer of Ossau Iraty AOCBrebis - if just French for "sheep" (so there is no difference from your #1 and #2 examples).

Carrefour does NOT manufacture anything. It's just a chain of supermarkets. They may market stuff under their own generic brand name, but they don't actually make the cheese.

HOWEVER, the cheese in your photo does not say AOC on it, so it could be made by someone else, though I doubt it. The package in the photo is not an original Tomme de Savoie package. The cheese arrive as a large wheel into the supermarket. An employee of the supermarket then cuts it into many wedges. They wrap each wedge individually, weigh it and prints a label with the price and barcode on it. The label has the supermarket name on it (Carrefour). It is no longer the original label and logo of the cheesemaker. Details such as the AOC or AOP or DOP seal are not on this label.

I trust that if it says Tomme de Savoie at a supermarket chain such as Carrefour, it is indeed Tomme de Savoie and not a fake or counterfeit.

Tomme de Savoie is is an AOC cheese which is made by any creamery that is a member of the Tomme de Savoie consortium. Consortium members can only be located in the French Savoie area so all of this cheese comes from France.

Still, IGP is a certification (though not as strict as AOC/PDO) that is only given to participating producers who still need to meet production and regional standards, so this cheese would likely still be French Savoie made.